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JOURNAL ARTICLE
MULTICENTER STUDY
Stereotactic Radiosurgery for Melanoma Brain Metastases: A Comprehensive Clinical Case Series.
World Neurosurgery 2017 April
BACKGROUND: Melanoma has high propensity to metastasize to the brain. With recent gains in improving patient survival, stereotactic radiosurgery (SRS) may offer an effective and less neurotoxic alternative to whole-brain radiation. In the study, we report on the safety and efficacy of SRS in treating melanoma brain metastases in 87 patients.
METHODS: This retrospective multicenter study examined 87 patients with 309 metastases who underwent single-dose or multifractionated SRS for treatment of intracranial metastases from malignant melanoma.
RESULTS: A total of 87 patients with a median age of 62 years (26-85) were treated from 2007-2014. Eighty patients (92%) also had extracranial metastases at time of treatment, and 69 patients (79%) had uncontrolled systemic disease. Seventy-nine patients (91%) underwent single-dose fractions, 7 (8%) underwent 3 fractions, and 1 (1%) was treated in 5 fractions. The mean tumor volume (GTV) treated was 1.92 cc. Five patients developed symptoms of acute phase toxicity, and 4 developed late phase toxicity. None had radionecrosis. The median survival was 6 months. The Kaplan-Meier 1-year survival rate was 31%, and the 1-year local control rate was 91%. The 1-year survival rate for BRAF-positive patients was 42%, and for BRAF-negative patients it was 27%. Forty-two patients (48%) had distant intracranial recurrences, and 1-year distant control rate was 32%.
CONCLUSIONS: SRS is a safe and effective treatment option for intracranial metastases from malignant melanoma. This paper serves as a reference for what is achievable in the absence of highly effective systemic therapy.
METHODS: This retrospective multicenter study examined 87 patients with 309 metastases who underwent single-dose or multifractionated SRS for treatment of intracranial metastases from malignant melanoma.
RESULTS: A total of 87 patients with a median age of 62 years (26-85) were treated from 2007-2014. Eighty patients (92%) also had extracranial metastases at time of treatment, and 69 patients (79%) had uncontrolled systemic disease. Seventy-nine patients (91%) underwent single-dose fractions, 7 (8%) underwent 3 fractions, and 1 (1%) was treated in 5 fractions. The mean tumor volume (GTV) treated was 1.92 cc. Five patients developed symptoms of acute phase toxicity, and 4 developed late phase toxicity. None had radionecrosis. The median survival was 6 months. The Kaplan-Meier 1-year survival rate was 31%, and the 1-year local control rate was 91%. The 1-year survival rate for BRAF-positive patients was 42%, and for BRAF-negative patients it was 27%. Forty-two patients (48%) had distant intracranial recurrences, and 1-year distant control rate was 32%.
CONCLUSIONS: SRS is a safe and effective treatment option for intracranial metastases from malignant melanoma. This paper serves as a reference for what is achievable in the absence of highly effective systemic therapy.
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